Select Course management>Customisation>Teaching style and set SELECT MENU STYLE to required colour, you can use a hex code.
To add a banner image to the dashboard select Dashboard>Page Banner and add an image- wide and thin works well on desktop screens, the one below is a 33Kb jpg 1516px wide and 182px high.
If you’d like to experiment where it doesn’t matter so much try this on one of last years modules, or drop me an email.
Mylihn Nguyen on AD280